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Robert Ramsdell

Robert Ramsdell graduated with a BA in Mathematics from the University Of California at Berkeley In 1986. He joined Great Lakes Dredge & Dock Company, Oakbrook, Illinois in 1989 as a Field Engineer/Project Engineer/ Superintendent. In 1997 he became a Production Engineer\Senior Production Engineer. He is presently Production Engineering Manager in the Administrative Division of GLDD Great Lakes Dredge.

 

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Articles By Robert Ramsdell

Hydraulic Transport of Sand/Shell Mixtures in Relation with the Critical Velocity
Hydraulic Transport of Sand/Shell Mixtures in Relation with the Critical Velocity
Authors: Sape Miedema | Robert Ramsdell

When pumping shells through a pipeline, a much higher velocity is required to make them erode and go back into suspension, because although the settling velocity of shells is much lower than equivalent sand particles, the erosion velocity is much higher.

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